Heat the oil in a pot over medium flame. Sauté onion for 2-3 minutes, add garlic, and sauté both until golden.

Add vegetables and grated ginger root. Cover the pot and steam the vegetables for 10 minutes.

Add water and spices and cook for 30 minutes, until vegetables are soft.

Remove from flame and puree until smooth. Taste, adjust seasoning, and add water if necessary.

To prepare pesto, place coriander leaves, garlic, salt, pepper, sugar, and pecans in a food processor and process until all the pieces are uniform size.

Add the oil very slowly until the mixture is smooth.

To serve, sprinkle each portion of soup with pesto.